Cheap flights from London Heathrow Airport to San Francisco from £384
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — SFO
29 Nov — 6 Dec1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to San Francisco are usually found in February or January, booked 23 days in advance, depart on a Wednesday or Thursday and return on a Wednesday
Cheap flight deals from Heathrow to San Francisco
Enter your travel dates to find the best prices.
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Best
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One-way
Cheapest flights from Heathrow to San Francisco
Explore the most affordable flight options available from Heathrow to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2026.
Tue 10/1110:10 -
1 stop18h 48m
Mon 14/1206:00 -
1 stop16h 50m
Deal found 27/10£384
Mon 9/1108:55 -
1 stop20h 54m
Mon 14/1206:00 -
1 stop16h 50m
Deal found 26/10£385
Wed 11/1112:20 -
1 stop15h 57m
Sun 13/1206:00 -
1 stop17h 45m
Deal found 28/10£385
Sun 6/1212:05 -
1 stop18h 19m
Sun 13/1206:35 -
1 stop17h 20m
Deal found 28/10£391
Sun 6/1213:00 -
1 stop16h 33m
Sun 13/1208:25 -
1 stop14h 05m
Deal found 26/10£394
Tue 17/1106:40 -
1 stop16h 10m
Tue 24/1116:45 -
1 stop16h 55m
Deal found 28/10£397
Thu 12/1108:55 -
1 stop18h 02m
Sun 13/1206:00 -
1 stop17h 05m
Deal found 26/10£399
Fri 13/1110:10 -
1 stop20h 32m
Mon 14/1206:00 -
1 stop16h 50m
Deal found 27/10£406
Mon 16/1106:40 -
1 stop16h 10m
Tue 24/1116:45 -
1 stop17h 45m
Deal found 28/10£410
Fri 20/1106:40 -
1 stop16h 10m
Tue 24/1116:45 -
1 stop15h 15m
Deal found 28/10£411
Sat 7/1114:45 -
1 stop14h 02m
Wed 2/1212:39 -
1 stop15h 41m
Deal found 30/10£414
Thu 12/1110:10 -
1 stop18h 48m
Tue 15/1206:00 -
1 stop17h 45m
Deal found 28/10£415
Best flights from Heathrow to San Francisco
Discover carefully curated flight deals from Heathrow to San Francisco that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 October 2026.
Wed 18/1114:45 -
1 stop26h 56m
Wed 25/1120:33 -
1 stop31h 47m
Deal found 29/10£443
Mon 14/1206:30 -
1 stop13h 15m
Wed 30/1205:45 -
1 stop20h 15m
Deal found 27/10£493
Fri 25/1210:05 -
Nonstop11h 15m
Tue 5/122:54 -
1 stop23h 46m
Deal found 25/10£519
Sat 9/113:10 -
1 stop16h 49m
Thu 14/118:45 -
Nonstop10h 35m
Deal found 25/10£534
Thu 17/1219:50 -
2 stops27h 00m
Wed 30/1216:45 -
1 stop15h 15m
Deal found 28/10£597
Tue 17/1111:50 -
Nonstop11h 00m
Tue 24/1123:35 -
1 stop23h 30m
Deal found 26/10£508
Sat 26/1211:35 -
2 stops19h 29m
Sun 13/612:15 -
1 stop13h 45m
Deal found 28/10£524
Tue 5/119:20 -
1 stop37h 13m
Tue 15/616:35 -
Nonstop10h 25m
Deal found 28/10£543
Mon 23/1111:50 -
Nonstop11h 00m
Wed 9/1216:40 -
Nonstop10h 15m
Deal found 27/10£509
Fri 27/1111:10 -
2 stops28h 20m
Wed 2/1212:50 -
Nonstop10h 35m
Deal found 29/10£527
Sun 15/1109:50 -
1 stop18h 42m
Tue 1/1214:59 -
1 stop12h 36m
Deal found 29/10£515
Thu 24/1210:55 -
2 stops19h 39m
Thu 7/122:00 -
1 stop14h 10m
Deal found 25/10£594
Direct flights from Heathrow to San Francisco
Explore direct flight options from Heathrow to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 October 2026.
Fri 22/111:45 -
Nonstop11h 10m
Sat 30/120:35 -
Nonstop10h 35m
Deal found 26/10£394
Thu 14/115:20 -
Nonstop11h 25m
Tue 19/117:25 -
Nonstop10h 25m
Deal found 30/10£413
Mon 16/1111:45 -
Nonstop11h 10m
Mon 17/516:35 -
Nonstop10h 25m
Deal found 29/10£462
Mon 16/1111:45 -
Nonstop11h 10m
Tue 18/518:40 -
Nonstop10h 30m
Deal found 29/10£462
Tue 17/1115:20 -
Nonstop11h 25m
Wed 25/1117:25 -
Nonstop10h 25m
Deal found 28/10£467
Tue 12/111:50 -
Nonstop11h 00m
Sat 16/116:40 -
Nonstop10h 15m
Deal found 25/10£470
Wed 13/111:50 -
Nonstop11h 00m
Thu 28/116:40 -
Nonstop10h 15m
Deal found 28/10£471
Thu 14/111:50 -
Nonstop11h 00m
Wed 20/116:40 -
Nonstop10h 15m
Deal found 29/10£475
Fri 8/111:45 -
Nonstop11h 10m
Wed 12/521:00 -
Nonstop10h 20m
Deal found 28/10£476
Wed 18/1111:45 -
Nonstop11h 10m
Wed 2/1217:25 -
Nonstop10h 25m
Deal found 28/10£480
Mon 11/111:50 -
Nonstop11h 00m
Tue 12/116:40 -
Nonstop10h 15m
Deal found 25/10£482
Wed 11/1115:20 -
Nonstop11h 25m
Thu 17/1220:35 -
Nonstop10h 35m
Deal found 28/10£483
Last-minute flights from Heathrow to San Francisco
Discover last-minute flight deals from Heathrow to San Francisco. Data last updated 30 October 2026 and is based on user searches.
Sat 7/1114:45 -
1 stop14h 02m
Wed 2/1212:39 -
1 stop15h 41m
Deal found 30/10£414
Sat 7/1114:45 -
1 stop14h 58m
Mon 23/1110:52 -
1 stop17h 28m
Deal found 30/10£421
Mon 9/1108:55 -
1 stop20h 54m
Mon 14/1206:00 -
1 stop16h 50m
Deal found 26/10£385
Tue 10/1110:10 -
1 stop18h 48m
Mon 14/1206:00 -
1 stop16h 50m
Deal found 27/10£384
Wed 11/1112:20 -
1 stop15h 57m
Sun 13/1206:00 -
1 stop17h 45m
Deal found 28/10£385
Thu 12/1108:55 -
1 stop18h 02m
Sun 13/1206:00 -
1 stop17h 05m
Deal found 26/10£399
Thu 12/1110:10 -
1 stop18h 48m
Tue 15/1206:00 -
1 stop17h 45m
Deal found 28/10£415
Fri 13/1110:10 -
1 stop20h 32m
Mon 14/1206:00 -
1 stop16h 50m
Deal found 27/10£406
Mon 16/1106:40 -
1 stop16h 10m
Tue 24/1116:45 -
1 stop17h 45m
Deal found 28/10£410
Mon 16/1114:45 -
1 stop16h 00m
Wed 2/1207:00 -
1 stop21h 20m
Deal found 30/10£420
Tue 17/1106:40 -
1 stop16h 10m
Tue 24/1116:45 -
1 stop16h 55m
Deal found 28/10£397
Fri 20/1106:40 -
1 stop16h 10m
Tue 24/1116:45 -
1 stop15h 15m
Deal found 28/10£411
One-way flights from Heathrow to San Francisco
Search for one-way flight options from Heathrow to San Francisco. Find affordable one-way fares based on user searches. Data last updated 30 October 2026.
Wed 23/1218:30 -
2 stops34h 56m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£403
Sat 21/1106:00 -
2 stops22h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£404
Sun 10/120:05 -
1 stop28h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 27/10£406
Tue 1/1220:50 -
2 stops25h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£406
Tue 17/1118:45 -
2 stops28h 00m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£407
Sun 8/1119:55 -
1 stop26h 30m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 30/10£408
Thu 19/1114:50 -
3 stops51h 56m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 28/10£408
Thu 24/1214:45 -
2 stops34h 20m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£409
Mon 9/1120:50 -
3 stops49h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 26/10£411
Thu 7/116:20 -
1 stop17h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 29/10£412
Find flight deals from Heathrow to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 October 2026.
Customise your flight search to find flights from Heathrow to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 30 October 2026.
Use the filters below to find and compare flights from London Heathrow Airport to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 15/12
13:00-21:33
1 stop16h 33m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£416
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 7/4
16:15-19:20
Nonstop11h 05m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£425
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 25/11
09:20-00:44
1 stop23h 24m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£440
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 18/11
14:45-09:41
1 stop26h 56m
San Francisco
Wed 25/11
20:33-12:20
1 stop31h 47m
£443
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Sat 9/1
13:45-16:30
1 stop34h 45m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£459
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 14/12
06:30-11:45
1 stop13h 15m
San Francisco
Wed 30/12
05:45-10:00
1 stop20h 15m
£493
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Wed 23/12
13:45-16:30
1 stop34h 45m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£499
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Thu 17/12
09:00-16:30
1 stop15h 30m
San Francisco
Wed 31/12
00:00-09:00
Nonstop0h 00m
£501
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Tue 17/11
11:50-14:50
Nonstop11h 00m
San Francisco
Tue 24/11
23:35-07:05
1 stop23h 30m
£508
LondonSan Francisco
LHR London Heathrow - SFO San Francisco
LHRSFO
London Heathrow
Mon 23/11
11:50-14:50
Nonstop11h 00m
San Francisco
Wed 9/12
16:40-10:55
Nonstop10h 15m
£509
Flights are sorted by cheapest return flights first.
Deals found on 28/10
Showing 1-10 of 23 resultsSorted by cheapest first
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2
3
Best time to book a flight from Heathrow to San Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Heathrow with our price prediction graph.
LHR-SFO
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to San Francisco
Prices
Delays
More
How far ahead should I book a flight from London Heathrow Airport to San Francisco?
The price you pay for your flight from London Heathrow Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 22 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from London Heathrow Airport to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of £468). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of £645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to SFO?
Find hourly flight availability from Heathrow to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2026.
When flying from London Heathrow Airport to San Francisco, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How much does it cost for a return flight from London Heathrow Airport to San Francisco?
Airfare is below average for this route at the moment.
London Heathrow Airport to San Francisco flights typically cost between £426 and £587 in November.The cheapest return price found within the last 5 days was £384 on Delta (10 Nov–14 Dec).
How often are flights from London to San Francisco delayed?
About 13% of weekly flights between London and San Francisco have experienced delays in the past year, with the average delay time being 144 minutes.
What is the most punctual flight time for London to San Francisco flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Friday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on London to San Francisco flights?
Over the past year, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.
What’s the top stopover airport for flights from London Heathrow Airport to San Francisco?
Share of one-stop return flights from London Heathrow Airport to San Francisco chosen by Cheapflights users in the past 12 months, using the same stopover each way.
Dublin (DUB) – chosen by Cheapflights users on 29% of one-stop itineraries from London Heathrow Airport to San Francisco on Cheapflights.
What’s the cheapest stopover airport for flights from London Heathrow Airport to San Francisco?
Average return fare for one-stop flights from London Heathrow Airport to San Francisco, chosen by Cheapflights users in the past 12 months, with the same stopover each way.
Minneapolis (MSP) is the most affordable one-stop option, with an average return flight price of £341.
What’s the fastest stopover option from London Heathrow Airport to San Francisco?
Shortest average travel time for one-stop one-way flights from London Heathrow Airport to San Francisco, based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.
Flights via Vancouver (YVR) have the shortest average one-way travel time for one-stop routes: 14h 04m.
Which airport typically offers the quickest stopover for flights from London Heathrow Airport to San Francisco?
Average stopover duration for one-stop one-way flights from London Heathrow Airport to San Francisco, chosen by Cheapflights users in the last 12 months, grouped by stopover airport.
Flights via Atlanta (ATL) offer the fastest connection on this route, with an average stopover time of 1h 09m.
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated 30 October 2026.
See what other customers who have flown with Austrian Airlines,Virgin Atlantic, andUnited Airlines from London Heathrow Airport to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Flight was delayed 2 1/2 hours. they told us mechanical. Otherwise, fine service
Related info for your journey
Find useful and relevant information for your journey from Heathrow to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly into for flights to San Francisco from London Heathrow?
Located just 11.0 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from London Heathrow. Booking flights from London Heathrow to San Francisco (SFO) should be relatively easy as there are 17 daily inbound flights from London Heathrow from 19 different airlines.
How long is the flight from London Heathrow Airport to San Francisco?
Alaska Airlines and Delta can get you from London Heathrow Airport to San Francisco in just under 13h 15m. Your travel time can differ by up to 13h 41m. Airlines will cover a distance of 5350 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from London Heathrow Airport to San Francisco round-trip?
Cheapflights users have booked flights from London Heathrow Airport to San Francisco round-trip from £339. Other airlines that can offer you cheap pricing are SWISS, from £352, and TAP AIR PORTUGAL, from £362. Delta is priced at 38% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from London Heathrow Airport to San Francisco one-way?
To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at £328. British Airways flights start at £328 while deals on JetBlue start at £341 one-way.
What are the most reliable airlines from London Heathrow Airport to San Francisco?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to San Francisco on time: Air Canada (77%), Austrian Airlines (77%), United Airlines (77%).
What are the cheapest flights from London Heathrow Airport to San Francisco?
The cheapest flight price from London Heathrow Airport to San Francisco is £361. On average you can expect to pay £1,075. The most popular route, (London Heathrow - San Francisco), can usually be booked for £391.
Can I find deals for business class flights from Heathrow to San Francisco?
Yes. Cheapflights offers flight deals from Heathrow to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to San Francisco?
Currently, February is the cheapest month in which you can book a flight from London Heathrow Airport to San Francisco (average of £468). Flying from London Heathrow Airport to San Francisco in December is currently the most expensive (average of £645). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Book flights to San Francisco if you plan to visit one of these locations
San Bruno
Santa Cruz
Roseville
Newark
Sunnyvale
Bodega Bay
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Fly from Heathrow to San Francisco on these airlines
Choose from the following airlines for your flight from Heathrow to San Francisco. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Browse through other flights departing from Heathrow. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 30 October 2026.
Top 10 airlines flying from Heathrow to San Francisco
Discover the top 10 airlines that operate flights from Heathrow to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 30 October 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to San Francisco?
900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Heathrow today with Cheapflights!
Why should you use Cheapflights to find cheap flight tickets from Heathrow to San Francisco?
By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to San Francisco from Heathrow.
Can Cheapflights find flights from Heathrow to San Francisco with no change fees?
Yes! Cheapflights helps users easily find flights from Heathrow to San Francisco with no change fees.
Can Cheapflights notify me if prices for flights from Heathrow to San Francisco become cheaper?
Of course! You can now track prices for flights from Heathrow to San Francisco and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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